♪ whatever your business challenge, dell has the technology and services to help you solve it. >> caller: everybody is talking about it, the showdown in denver. but one man has a perspective that no one else has. senator john mccain, who has debated both president obama and governor romney. what does he have to say? last night tweeting, if that debate was a fight, they would have stopped. it but today, he warns, do not underestimate president obama. senator john mccain is here. good evening, sir. good evening. >> greta: there was an interesting debate last night. let me get the overall view. i know that you said earlier it was poor. but if you could elaborate on that? >> greta, i think that it obviously was a very big win for for -- for mitt. i think it's pretty obvious that -- that president obama has spent the last four years in a bubble with an adoring media. but i also know that barack obama is a very excellent debater. he knows -- he will be going over the mistakes that he made and i think that he hrs is going to be much better and much better prepared in the next debate. this was r